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Super Tuesday: Where the candidates stand on key issues

As Super Tuesday approaches, The Oklahoman compiled a brief look at where some of the leading Democratic candidates stand on several key issues, including healthcare, climate change, guns, taxes and more.

Here's what to know before casting your vote.

Vermont Sen. Bernie Sanders

[AP Photo/Matt Rourke]

U.S. Senate since 2007, U.S. House 1991-2007

Age: 78

Health Care

National, single-payer health care system (Medicare for All) would eliminate